Sectional form for concrete construction.



G. SHERWOOD.

SECTIONAL FORM FOR CONCRETE CONSTRUGTION.

APPLICATION P FEE/8, 1910.

ggg gg Patented July 19, 1910.

zm al bo'bnm o nnrrnn STATES PATENT opinion.

GEORGE H. SHERWOOD, OF DENVER, COLORADO.

SECTIONAL FORM FOR CONCRETE CONSTRUCTION;

sas es.

To all whom it may concern.

Be it known that I, GEORGE H. Simnwoon, a citizen of the United States, residing at Denver, in the county of Denver and State of Colorado, have invented a new and useful Sectional Form for Concrete Construction, of which the following is a specification.

This invention relates to a sectional form for use in the construction of concrete buildings and it is more particularly designed as an improvement upon the structure shown and described in an application filed by me on- June 29, 1906, said application bearing Serial Number 324,082.

In devices of this character such as here tofore devised it has been necessary to utilize a mass of scaffolding and the like for supporting the forms in their proper positions, this scaffolding interfering seriously with the movements of the workmen.

()ne of the objects of the present inven tion is to provide a form which can be supported from points above the floor beams it thus being possible to work downward in the construction of the building and with the space above and below the forms practically clear.

.Another object is to provide a device of this character which can be readily set up and quickly taken down, the forms of all the floors in a structure being supported from above at points between the girders.

lVith these and other objects in view the invention consists in certain novel details of construction and combinations of parts hereinafter more fully described and pointed out in the claims.

In the accompanying drawings the preferred form of the invention has been shown.

In said drawings :-Fignre 1 is a view partly in section and partly in elevation of the form and showing the means employed for supporting the same at points between the girders. Fig. 2 is a section on line A-B Fig. 1 and showing the trussed plank.'

Fig. 3 is a perspective view of a portion of the sotl'it. .Fig. 4- is a detail view of one of the joist supporting cleats used in connection with the sol'lit.

Referring to the figures by characters of reference 1 designates a supporting plank mounted at its ends upon posts, this plank being arranged longitudinally under one of the. girders C of the floor structure and having a truss rod 3 extended longitudinally Specification of Letters Patent.

Application filed February 8, 1910.

Patented July 19 1910.

Serial No. 542,693.

thereunder, said truss rod being similar to the onedisclosed in my application heretofore referred to. A soliit 4: is located above the plank 1 and has transverse cleats 5 nailed or otherwise secured to the bottom thereof and extending beyond the edges of the sofiit,

there being blocks 6 upon the end portions sisting of upwardly converging rafters or beams 5) and a head strip 10, the said beams and strip being rigidly but detachably con neeted and the truss frame preferably extending over one of the beams C while resting upon the two beams at opposite sides thereoij, A. rod '11 extends through and is supported by each of the beams 9 and projects downwardly through the center of the form 12, which as shown in Fig. 1, is made up of two sections a and b respectively. These two sections are supported at their meeting ends upon a strip 13 which is en gaged by the lower portion of the rod 11, that portion of the rod within the form being surrounded by a sleeve 14; of paper or the like. Joists 15 are mounted on the blocks 6 and support those ends of the sections a and Z) which are adjacent the girders C. The facing boards 16 hanging from those ends of the sections a and b nearest the girders C are designed to rest upon the beveled faces of the cleats 8, the lower edges of these facing boards being correspondingly beveled.

In using the structure herein described the. frame made up of beams 9 and 10 is first set up upon the girders so as to span them and the truss planks 1 are their set up upon the posts 2 with the'sotiit in position therconand the blocks 6 between the sotiit and the girders. The sectional form is then placed upon the joists 15 and the cleats S, and are supported at intermediate points by the rods ll-and strips 13. After the floor has been. properly molded the blocks 6 can be knocked out and the joists 15 removed, after which, by withdrawing the rods 11, the sections a and b can be readily lowered out of position, this removal of the sections bein facilitated by reason of the fact that the acing boards 16 are beveled Where they contact with the cleats 8. The Withdrawal of the rods 11 from the forms is facilitated by utilizing the paper sleeves 18 which prevent the concrete from adhering to the rods. Moreover central openings are thus formed Within the molded floor and cables or ropes ends upon adjoining girders.

By suspending the forms from a trus frame a lar e ercenta 'e'of the scaffoldin 7 2: b h

heretofore necessary, is dispensedwith, and the workmen are given more room. Moreover the material used in the building can be more readily handled because the lower portion of the building can be left clear.

While the upper floors are being constructed.

It is of course to be understood'that various changes may be made in the construction and arrangement of the parts without departing'from the spirit or sacrificing any 1 ablymounted on the beveled faces of the of the advantages of the invention as dc fined in the appended claims.

What is claimed is '1. A structure of the class described including sotiits, supports therefor, transverse cleats secured to the bottom oJ-Qach sol'tit and extending beyond the edges thereof, 7

blocks upon the projecting end portions of the cleats, longitudinally extending cleats upon the side edge portions of the sotiits and having beveled top faces, joists removably mounted on the blocks, facing boards rcmovlongitudinal cleats, and form sections extendlng from the facing boards and resting on the joists,,said sections meeting at points intermediate the facing boards, and upwardly extending means for supporting the meeting portions of the form sections.

2. A structure of the class described including sotiits, transversely extending cleats secur d to the bottom] faces thereof and ex tendi g beyond the sideedges of the sotfits,

blocks upon the projecting end portions of the cleats, beveled longitudinal cleats upon the side edge portions of the soflits, joists supported by the blocks, faeingboards supported by the beveled longitudinal cleats,

form sections resting at their outer ends upon the joists, said sections meeting at a point between the joists, a truss frame fixedly supported above the form sections and soilits, and supports extending downwardly from the truss frame and engaging the. meeting portions of the form sections.

3. A structure of the class described including soflits, transverse cleats secured to the bottom faces of the solfits and projecting beyond the sides thereof, blocks upon the projecting ends of the cleats, longitudinally extending beveled cleats, upon the side portions of the sotlils, joists dctachably sup-. ported by the blocks, facing boards (l eiu.(-l1

ably supported by the beveled cleats, form sections supported at. their outer ends by the joists and n'iecting at their inner ends, a supporting strip extending under the meeting and portions of the form sections, an

upwardly extending truss frame disposcd'BO entirely above the joists and form sections, and means extending downwardly from the truss frames for supporting said supporting strips.

4. l structure of the class described ineluding upuuirdly converging rafters constiw t-uting portions of a truss, sotlits, supports for the sotlits, form sections interposed between lhe sotlits and supported at their outer ends by said soti'its, supporting strips ex- 96 tending under the inner or adjoining ends of the form sections, and means extending downwardly from the upwardly converging 'afters for supporting said strips.

5. A structure of the class described ineluding a sotl'it, vsupports therefor, beveled longitudinally extending cleatslupon the soflit, transversely extending cleats connected to the soflit and projecting therebeyoiul,

spacing blocks upon the said cleats, a sup 100 )orting frame extending above the sollit, rods depending therefrom, a form ronsisting of sections supported at their meeting ends by the rods and at their opposite ends by said cleats, and joists upon the blocks and supporting the form sections.

In testintonythat I claim the foregoing as my own, I have hereto atlixed my signature in the presence of two witnesses.

1 GEORGE ll. Slllllt\ \()()l).

vVi tncsses L. G. BA'r'roN, I'l lVl onssnu. 

